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Stock Incentive Plans (Tables) | 3 Months Ended
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Mar. 31, 2023
Stock Incentive Plans |
Summary of stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | Aggregate
​ | ​ | ​ | ​ | Weighted- | ​ | Remaining | ​ | Intrinsic
​ | ​ | ​ | ​ | Average | ​ | Contractual | ​ | Value
​ |  | Shares |  | Exercise Price |  | Term (years) |  | (in thousands)
Outstanding at December 31, 2022 |  | 2,253,431 | ​ | $ | 15.43 |  | 8.57 | ​ | $ | 9,733
Granted |  | 474,250 | ​ | $ | 13.35 | ​ | ​ | ​ | ​ | ​
Exercised | ​ | (22,472) | ​ | $ | 1.65 | ​ | ​ | ​ | ​ | ​
Cancelled or forfeited |  | (142,975) | ​ | $ | 13.52 | ​ | ​ | ​ | ​ | ​
Outstanding at March 31, 2023 | ​ | 2,562,234 | ​ | $ | 15.27 | ​ | 8.57 | ​ | $ | 7,370
Vested and exercisable at March 31, 2023 | ​ | 835,970 | ​ | $ | 23.94 | ​ | 7.87 | ​ | $ | 1,468
Vested and expected to vest at March 31, 2023 |  | 2,562,234 | ​ | $ | 15.27 | ​ | 8.57 | ​ | $ | 7,370
​

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